Chuck.



F. P. GATES.

CHUCK.

APPLICATION FILED APB. 6, 1911.

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FREDERIC P. GATES, 0F NEWINGTON. CONNECTICUT, A SSIGNOR TO THE 'UNIONMANU- FACTURING COMPANY, OF NET/V BRITAIN, CONNECTICUT, A CORPORATIONOl1 CON- NECTICUT.

CHUCK.

Specification of Letters Patent.

Application tiled April 6. 1911. Serial No. 619,278.

To aU /zo/w/a it may coat/cra lo it known that l, Fiumicino l). (lirico5a citizcn of thc Unitcd titatco, and a rc;-iidcnt ot Newington, in thccounty olf lllartflord and Stato of tlonnccticut, havc invcntcd a nc\Yand lmprovcd Chuck, ot' which thc liol lowing is a opccilication.

My invcntion rclatccl moro cspccially to that"I clasS of chucks havingljawn locatctl upon thc 'l'acc platc ot tho hody ot a chuck and niovahlcradially thcrcon, and an ohjcct ol my inrcntiou7 among othcra, is toprovidc a dcvicc ot' this class. which may hc .iadily opcratcd ilor thcpurposc of clamping' work thcrcin, or thc clampingV jaws o't which mayhc rcadily removed to' any purpoSc.

(,)nc torni o't dcvicc cmhodyincr my iuvcntion, and in thc uso oli'which thc ohjcct hcrcin Sought may hc attained, is illustralcd in thcaccompanying drawings, in whichlligurc l is a vicw lookingY at thc l'accol? a chuck hody with my improvcd attachnicnt' applicd thcrcto. Figi'..2 is a dctail vicw partially in ccntral scction on a plano passingthrough thc ccntcr o't onc ot thc jaws. Fin: il is a dctail cdgc vicwot' thc chuck looking; a t', thc rear otl one oitl thc jaws.

My invention illustratcd and dcscrihcd hcrcin is not linlitcd in its uscwith any spccial kind ot chuck, as it will hc 4lound to possonoadvantag'c whcn applicd to various4 kinde; ot chucks, hut as l havccspccially dcinonst'ratcd its applicahility to a chuck uscd for turninglixturcs in which two chuck jaws locatcd oppooitc cach othcr arc cmploycd, I have adopted Such :t'orm ol chuck lor thc purposc otillustrating my invcntion hcrcin.

ln thc accompanyino' (l1a\\fiir .;sl thc, numcral t3 dcnotcs a chuckhody of any Suitahlc form and matcrial, within which Slots T arcVt'ormcd cxtcndiufc; radially 0l. thc hotly and in such nun'ihcrs as mayhc dcsircd, Ain thc .spicial torni oit' dcyicc hcrcin illustratcd thcrchcing two of thcsc slots; cxtcndingl in lino ono with thc otht acronsthc .'tacc olf thc chuck hotly. Thcsc slots opcn into jaw rcccsscs Swithin thc chuck hotly, thc slots and rccosocs hcing;` ol' thc usualT-.shapc Ain cross Scction to retain thc chuck jaws in placo whiloporinittingc;` thcin to slidc radially of thc chuck hody.

In carryingr out my invcntiou `I construct cach jaw in two sections, athread hcarii'ig' section 9 and a jaw hearing section 1.0. This tlrrcadhtaring .oct-tion l) is locatcd within and it; practically ol' thc samcwidth as thc rcccssi t. ti t'ccd thrcad ll (shown in dotted linfa inFigi'. Il) is 'tormcd on thc cdfic ol' cach thi-cad hcarinc; act-tion, a'lfccd scrcw 12 cpcratiicly cnggan'ing thc thrcad on cach `oct-tion l'orthc purposc ot moving;l thc jaw radially and in a manncr common todcviccs ol this claas. 'lhc jaw hcaring;l scction ol: wit-h is olf"loliapc, to corrcspond with thc croi-s cctional -ahapc ol thc Slot andthat: part ol" thc rccrss not. occupicd hy thc thrcad hcarinc ocction.`this Shapc lacing clcarly sccn in lfilc. l ot thc drawings. lhat partol. thc jaw hcarinja' ncclion o'lI cach jaw localcd in thc rot-,css H isprclicrahly ol thc Saulo width as thc thrcad hcaringl lcction and sitssuuarcly upon thc top thcrcol1 and is hcld in placc as hy moanl ol alockingI holt, lll movahlc longitudinally in an opcning' lklin thcthrcad hcarinc' ocction of cach jaw, thc cud ol thisl holt hcingi'lormcd to cncac'c a lockingi' rocoso la in thc jaw hcariircl scction ol'cach jaw. [tu actuating pin V1 (l cxtcnds 'from thc cud olE thc thi-cadhcaringl Scctiou oil' cach Aiaw into thc opcniini' lil. cacl actuatingpin having' a .alud 1i ccccutrically locatcd on thc pin and proicctiinginto a slot 1b tormcd acroaa thc lot-king; holt, to hc actuatcd thcrchy.Ilach actuating pin may hc hcld in placc an hy lucana o'lt a rctaininc'scrcw 1l) projcctinc; into a irroovc ift) in cach actuating piu, andcach pin is providcd with suit:-` ahlc lucano whclchy it, may hc tulncdto opcratc thc locking holt, as hcrcin shown thc cud o'iE thc pin hcing`lauuarcd to rcccivc a wrcnch.

lCach jaw hcarinlc1 ocction hcars at its uppcr cud a jaw 2l louitahly'lormcd to cnc'agc and clamp thc work lor which thc `iaw is dcsiggjncd,as' hcrcin shown thcrec jaws hcing' copccially dcaicncd to clamplixlurcs, as pipc unionzl upon which cutting' opcrutions arc to hcpcrt'ornnd. lt lrcuucnlly happcns in thc manipulation ol" auch articlcs;that 'in ordcr to Vplacc thc articlc within thc jaws thc laltcl must hcHcparatml to pcruiit passacc ol au cnlarc'cd part ol thc articlc, thcliawr; gripping thc articlc upon a Sniallcr part and hcingi closcd toposition a'ltcr thc articlc is in plat-c. lt is a slow opcration toniorc thc iawo l'or such purposcsl hy moans` ol thc Al'ccd .aci-cw, andlrcuucntly it hccolncs ncccssary to moi'c thc jaws to a `crcatcr cxtcntcvcn than may hc ohtaincd hy thc 'fccd screws. lVith my improved deviceit becomes necessary simply to remove the locking bolt by means of theactuating1 pin l5 when a jaw section may be moved to the extent desired,or both jaw sections may be so moved if required. It will also be seenthat jaws of different shape and form to grip Work of farious kinds anddimensions may be employed, the jaw sections being readily removed andreplaced by such as may be required.

'Vhile I have shown and described herein a preferred form andconstruction of device embodying my invention this may be differentlyconstructed Within the scope of the following" claims without avoidingthe spirit and intent of the invention, and l do not therefore limitmyself to the exact construction herein shown and described.

I claim l. A chuck body having a recess and a slot of less Width openingto the face of the jaw, a feeding jaw section located Within the recess,means for feeding said sect-ion to clamp and hold a piece of Work, a jawsection having a T-shaped part fitting` said slot and recess and with aaw located outside otl the face of the chuck, means for removablysecuring said feeding section and said jaw section together, and meansfor releasing said section to permit removal of the jaw sectionindependently of the feeding section.

2. A chuck body, a sectional chuck jaw including a feeding sectionsupported by the body,means for feeding said section, a jaw bearingsection, a locking bolt to lock the tivo sections together, an actuatingpin in engagement with said bolt to actuate it, and a jaw secured tosaid jaw bearing section.

3. A chuck body, a sectional chuck jaw supported by the body andincluding a feeding section, means for feeding said section, a jawbearing section, a sliding' bolt to lock said sections together, arotating' actuating pin having a stud eccentrically mounted and engagingsaid bolt to operate it, and a jaw secured to said jaw bearing section.

it. A chuck body having ay recess With a narrower slot opening therefromto th-e face of the body, a sectional chuck jaw including a feedingsection located in said recess, means for feeding said section, a jawbearing section having an enlarged part located in said recess and anarrower part extending through said slot With a jaw located outside ofthe face plate of the chuck, a locking bolt to lock said sectionstogether and an actuating pin in engagement With said bolt to operateit.

5. A chuck body having a recess with a narrower slot opening to the face0f the body, a sectional chuck jaw including a feeding section locatedin said recess and a jaw bearing section having a part located in saidrecess and a narrower part located in said slot, with a jaw loc-atedoutside said body, a locking bolt borne by the feeding section andadapted to enter a recess in the jaw bearing section, and an actuatingpin borne by the feeding section in engagement with said bolt to operateit.

G. A chuck body having a recess With a narrower slot opening to the faceof the body, a sectional. chuck jaw including a feeding section locatedin said recess and a jaw bearing section having an enlarged part locatedin said recess and a narrower part projecting through said slot with ajaw located outside of the chuck body, a locking bolt borne by one ofsaid sections to engage a recess in the opposite section and a lockingpin rotatably mounted in one of said sections to actuate the bolt andhaving a stud eccentrically located on the pin and in engagement Withsaid bolt.

7. A chuck body having a recess with a narrower slot opening to the faceof the chuck body, a sectional chuck jaw including a feeding sectionlocated in said recess, means for feeding said section, a jaw bearingsection haring a part located in said recess and a narronf'er partlocated in said slotq a jaw borne by said section outside of said body,a locking bolt borne by the feeding section to engage a recess in the awbearing section, an actuating pin rotatably mounted in the fili-edingsection, and a stud eccentrically mounted on said locking pin andlocated in an opening in said bolt to actuate the same.

FREDERIC P. GATES.

l/Vitnesses I An'riinn B. JENKINS, E. L. S'roUorrroN.

Copies of this patent may be obtained for ve cents cach. by addressingthe Commissioner of Patents, Washington, D. C.

